Molecular container assembly capable of conrolling binding and release of its guest molecules: Reversible encapsulation of organic molecules in sodium ion complexed cucurbituril

Journal of the American Chemical Society

Volumn 118, Issue 40, 1996, Pages 9790-9791

  Jeon, You Moon ^a   Kim, Jaheon ^a   Whang, Dongmok ^a   Kim, Kimoon ^a  

^a Pohang University of Science and Technology (POSTECH)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

CUCURBITURIL; POLYCYCLIC AROMATIC COMPOUND; UNCLASSIFIED DRUG;

ARTICLE; COMPLEX FORMATION; NUCLEAR MAGNETIC RESONANCE; REACTION ANALYSIS;

EID: 0029956355     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja962071x     Document Type: Article

References (17)

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2. Reviews: (a) Cram, D. J. Nature 1992, 356, 29. (b) Cram, D. J.; Cram, J. M. Container Molecules and Their Guests; Royal Society of Chemistry: Cambridge, U.K., 1994.
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10. -4 M. However, their analysis appears to be flawed as they assumed only one metal ion is bound to each portal of cucurbituril in all cases, which contradicts our current finding.
11. -2.
12. Supporting information.
13. 2 with all 4728 reflections and 609 variables converged to R1 (1 > 2σ(1)) = 0.066, wR2 (all data) = 0.162 and GOF = 1.13.
14. Like cucurbituril itself, 2 and 3 do not dissolve appreciably in water but do in the presence of excess sodium ions.
15. -2 M).
16. 19F NMR spectroscopy under these conditions. This observation excludes the possibility of simple exchange of the encapsulated THF with added trifluoroacetic acid.
17. -1, respectively, at room temperature.